I recently inherited an Epson 9900. It worked fine at first, but the VLM channel has become blocked. I have cleaned it per the videos, replaced the wiper, soaked the front with Piezo Flush for a day and installed a cartridge with just Piezo Flush for two days and it has only gotten worth. I am wondering if it is a delaminated print head and whether it is worth trying to replace the head or just convert it to B&W only. A new head seems to cost around $1500. If I convert it to B&W only, I am looking for suggestions of which system for B&W prints, Digital Negatives and Polymer plates. I have also attached a recent nozzle check.